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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "openpagesswitcher.h"
#include "openpageswidget.h"
#include <utils/hostosinfo.h>
#include <QEvent>
#include <QKeyEvent>
#include <QVBoxLayout>
using namespace Help::Internal;
const int gWidth = 300;
const int gHeight = 200;
OpenPagesSwitcher::OpenPagesSwitcher(QAbstractItemModel *model)
: QFrame(nullptr, Qt::Popup)
, m_openPagesModel(model)
{
resize(gWidth, gHeight);
m_openPagesWidget = new OpenPagesWidget(m_openPagesModel, this);
// We disable the frame on this list view and use a QFrame around it instead.
// This improves the look with QGTKStyle.
if (!Utils::HostOsInfo::isMacHost())
setFrameStyle(m_openPagesWidget->frameStyle());
m_openPagesWidget->setFrameStyle(QFrame::NoFrame);
m_openPagesWidget->allowContextMenu(false);
m_openPagesWidget->installEventFilter(this);
auto layout = new QVBoxLayout(this);
layout->setContentsMargins(0, 0, 0, 0);
layout->addWidget(m_openPagesWidget);
connect(m_openPagesWidget, &OpenPagesWidget::closePage,
this, &OpenPagesSwitcher::closePage);
connect(m_openPagesWidget, &OpenPagesWidget::setCurrentPage,
this, &OpenPagesSwitcher::setCurrentPage);
}
OpenPagesSwitcher::~OpenPagesSwitcher() = default;
void OpenPagesSwitcher::gotoNextPage()
{
selectPageUpDown(-1);
}
void OpenPagesSwitcher::gotoPreviousPage()
{
selectPageUpDown(1);
}
void OpenPagesSwitcher::selectAndHide()
{
setVisible(false);
QModelIndex index = m_openPagesWidget->currentIndex();
if (index.isValid())
emit setCurrentPage(index);
}
void OpenPagesSwitcher::selectCurrentPage(int index)
{
m_openPagesWidget->selectCurrentPage(index);
}
void OpenPagesSwitcher::setVisible(bool visible)
{
QWidget::setVisible(visible);
if (visible)
setFocus();
}
void OpenPagesSwitcher::focusInEvent(QFocusEvent *event)
{
Q_UNUSED(event)
m_openPagesWidget->setFocus();
}
bool OpenPagesSwitcher::eventFilter(QObject *object, QEvent *event)
{
if (object == m_openPagesWidget) {
if (event->type() == QEvent::KeyPress) {
auto ke = static_cast<const QKeyEvent*>(event);
if (ke->key() == Qt::Key_Escape) {
setVisible(false);
return true;
}
const int key = ke->key();
if (key == Qt::Key_Return || key == Qt::Key_Enter || key == Qt::Key_Space) {
emit setCurrentPage(m_openPagesWidget->currentIndex());
return true;
}
const Qt::KeyboardModifiers modifier = Utils::HostOsInfo::isMacHost()
? Qt::AltModifier : Qt::ControlModifier;
if (key == Qt::Key_Backtab
&& (ke->modifiers() == (modifier | Qt::ShiftModifier)))
gotoNextPage();
else if (key == Qt::Key_Tab && (ke->modifiers() == modifier))
gotoPreviousPage();
} else if (event->type() == QEvent::KeyRelease) {
auto ke = static_cast<const QKeyEvent*>(event);
if (ke->modifiers() == 0
/*HACK this is to overcome some event inconsistencies between platforms*/
|| (ke->modifiers() == Qt::AltModifier
&& (ke->key() == Qt::Key_Alt || ke->key() == -1))) {
selectAndHide();
}
}
}
return QWidget::eventFilter(object, event);
}
void OpenPagesSwitcher::selectPageUpDown(int summand)
{
const int pageCount = m_openPagesModel->rowCount();
if (pageCount < 2)
return;
const QModelIndexList &list = m_openPagesWidget->selectionModel()->selectedIndexes();
if (list.isEmpty())
return;
QModelIndex index = list.first();
if (!index.isValid())
return;
index = m_openPagesModel->index((index.row() + summand + pageCount) % pageCount, 0);
if (index.isValid()) {
m_openPagesWidget->setCurrentIndex(index);
m_openPagesWidget->scrollTo(index, QAbstractItemView::PositionAtCenter);
}
}
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